18073880 has 32 divisors (see below), whose sum is σ = 44364240. Its totient is φ = 6572160.

The previous prime is 18073877. The next prime is 18073919. The reversal of 18073880 is 8837081.

It is a self number, because there is not a number n which added to its sum of digits gives 18073880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20099 + ... + 20978.

Almost surely, 2^18073880 is an apocalyptic number.

18073880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18073880 is an abundant number, since it is smaller than the sum of its proper divisors (26290360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18073880 is a wasteful number, since it uses less digits than its factorization.

18073880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41099 (or 41095 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 18073880 is about 4251.3386127195. The cubic root of 18073880 is about 262.4322062269.

The spelling of 18073880 in words is "eighteen million, seventy-three thousand, eight hundred eighty".